Synergistic paraffinic oil and boscalid fungicides

• US 9,750,249 B2
• Filed: 11/24/2015
• Issued: 09/05/2017
• Est. Priority Date: 09/09/2010
• Status: Active Grant

• Current Assignee: Suncor Energy Incorporated
• Original Assignee: Suncor Energy Incorporated
• Inventors: Fefer, Michael, Liu, Jun
• Primary Examiner(s): Fisher, Abigail
• Application Number:
  US14/950,579
• Publication Number:
  US 20160150783A1
• Time in Patent Office: 651 Days
• Field of Search: None
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 27/00 Biocides, pest repellants or attractants, or plant growth regulators containing hydrocarbons
• CPC Class Codes: A01N 43/40 six-membered rings
• CPC Class Codes: A01N 61/02 Mineral oils; Tar oils; Tar; Distillates, extracts or conversion products thereof containing single chemical compounds isolated from these materials A01N27/00 - A01N59/00

Abstract

Fungicidal compositions comprising a paraffinic oil and 2-chloro-N-(4′-chloro[1,1′-biphenyl]-2-yl)-3-pyridinecarboxamide (boscalid) are provided. The fungicidal compositions may further comprise a pigment. The fungicidal compositions may be provided as oil-in-water (O/W) emulsions which may be used for controlling fungal disease, such as dollar spot or bentgrass dead spot or bermudagrass dead spot, in plants, such as turfgrasses. Methods of applying the fungicidal compositions are also provided.

Claims

1. A method of controlling a fungal pathogen of a plant, the method comprising applying to the plant an emulsifier, a paraffinic oil, a pigment, and boscalid, wherein the paraffinic oil, pigment, and boscalid are applied in amounts that are synergistically effective for controlling the fungal pathogen.

2. The method according to claim 1, further comprising mixing two or more of the paraffinic oil, the emulsifier, the pigment, and boscalid before applying to the plant.

3. The method according to claim 1, wherein the paraffinic oil comprises a paraffin having a number of carbon atoms ranging from about 16 to about 35.

4. The method according to claim 1, wherein the paraffinic oil comprises a paraffin having an average number of carbon atoms of about 23.

5. The method according to claim 1, wherein the paraffinic oil has a paraffin content of at least about 80%.

6. The method according to claim 1, wherein the paraffinic oil has a paraffin content of at least about 90%.

7. The method according to claim 1, wherein the paraffinic oil has a paraffin content of at least about 99%.

8. The method according to claim 1, wherein the method further comprises applying a silicone surfactant to the plant.

9. The method according to claim 1, wherein the pigment is a polychlorinated (Cu II) phthalocyanine.

10. The method according to claim 8, wherein the emulsifier comprises a natural or synthetic alcohol ethoxylate, an alcohol alkoxylate, an alkyl polysaccharide, a glycerol oleate, a polyoxyethylene-polyoxypropylene block copolymer, an alkyl phenol ethoxylate, a polymeric surfactant, a polyethylene glycol, a sorbitan fatty acid ester ethoxylate, or a combination thereof.

11. The method according to claim 8, wherein the emulsifier comprises a natural or synthetic alcohol ethoxylate, a polymeric surfactant, a sorbitan fatty acid ester, or a combination thereof, and the composition further comprises a polyethylene glycol according to formula IV:

R¹—

O—

(CH₂CH₂O)_f—

R²

wherein R¹═

H or CH₂═

CH—

CH₂ or COCH₃;

R²═

H or CH₂═

CH—

CH₂ or COCH₃; and

f≧

1.

12. The method according to claim 1, wherein the fungal pathogen is at least one of a fungus that causes dollar spot in turfgrass and a fungus that causes bentgrass dead spot or bermudagrass dead spot in a turfgrass.

13. The method according to claim 1, wherein the fungal pathogen is a fungus that blights leaf tissue in a turfgrass.

14. The method according to claim 1, wherein the fungal pathogen is a fungus that causes dollar spot in a turfgrass.

15. The method according to claim 1, wherein the fungal pathogen is selected from the group consisting of:

Sclerotinia homoeocarpa and Ophiosphaerella agrostis.

16. The method according to claim 1, wherein the plant is one or more of:

bentgrass, bluegrass, ryegrass, fescue, bermudagrass, bahiagrass, zoysia, beachgrass, wheatgrass or carpetgrass.

17. The method according to claim 1, wherein the plant is one or more of:

creeping bentgrass, colonial bentgrass, perennial ryegrass, annual ryegrass, Kentucky bluegrass, common bermudagrass, hybrid bermudagrass, annual bluegrass, seashore paspalum, St. Augustinegrass, tall fescue, bahiagrass, zoysiagrass, centipedegrass, rough stalk bluegrass, buffalo grass, blue grama, or annual bentgrass.

18. The method according to claim 1, wherein the fungal pathogen is a fungus that causes bentgrass dead spot or bermudagrass dead spot in a turfgrass.

19. The method according to claim 1, wherein boscalid is applied to the plant at a rate from about 0.02 to about 0.12 oz per 1000 square feet.

20. The method according to claim 1, wherein the paraffinic oil is applied to the plant at a rate from about 0.9 to about 32 oz/1000 square ft.